Dirt bikes cost $5-10k new and have a very limited warranty when you buy them. Dirt bikes like pinball machines are complicated and guaranteed to need maintenance and parts wear out. That being said if I spent $9k on a new dirt bike and didn't run well and had engine and electrical problems you bet I would ask for a replacement or attempt a return even if it did cost me. The machine sounds like a lemon and I rather lose $1000 than possibly much more if the issues never got addressed.